我试图让Dejavu使用raspbian（raspberry pi 3）。我试图将麦克风输入的音频与mysql数据库中的文件进行匹配。我已经过测试，我可以用pyaudio录制，但是我需要设置采样率= 24000＆amp; CHUNK = 4056.我几乎使用了Dejavu示例附带的默认代码。
当我运行代码时出现以下错误： IOError：[Errno Invalid rate rate] -9997
有人有任何建议如何解决这个问题吗？
这是我的Python代码：
import warnings
import json
warnings.filterwarnings("ignore")
from dejavu import Dejavu
from dejavu.recognize import FileRecognizer, MicrophoneRecognizer
# load config from a JSON file (or anything outputting a python dictionary)
with open("dejavu.cnf.SAMPLE") as f:
config = json.load(f)
if __name__ == '__main__':
# create a Dejavu instance
djv = Dejavu(config)
# Or recognize audio from your microphone for `secs` seconds
secs = 5
song = djv.recognize(MicrophoneRecognizer, seconds=secs)
if song is None:
print "Nothing recognized -- did you play the song out loud so your mic could hear it? :)"
else:
print "From mic with %d seconds we recognized: %s\n" % (secs, song)
这是来自终端的日志：
python exampletest.py
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused
ALSA lib pcm_dmix.c:1022:(snd_pcm_dmix_open) unable to open slave
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
Expression 'paInvalidSampleRate' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 2048
Expression 'PaAlsaStreamComponent_InitialConfigure( &self->capture, inParams, self->primeBuffers, hwParamsCapture, &realSr )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 2719
Expression 'PaAlsaStream_Configure( stream, inputParameters, outputParameters, sampleRate, framesPerBuffer, &inputLatency, &outputLatency, &hostBufferSizeMode )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', line: 2843
Traceback (most recent call last):
File "exampletest.py", line 26, in <module>
song = djv.recognize(MicrophoneRecognizer, seconds=secs)
File "/home/pi/dejavu/dejavu/__init__.py", line 167, in recognize
return r.recognize(*options, **kwoptions)
File "/home/pi/dejavu/dejavu/recognize.py", line 103, in recognize
self.start_recording()
File "/home/pi/dejavu/dejavu/recognize.py", line 77, in start_recording
frames_per_buffer=chunksize,
File "/usr/lib/python2.7/dist-packages/pyaudio.py", line 747, in open
stream = Stream(self, *args, **kwargs)
File "/usr/lib/python2.7/dist-packages/pyaudio.py", line 442, in __init__
self._stream = pa.open(**arguments)
IOError: [Errno Invalid sample rate] -9997